Interesting Engineering on MSN52m
China develops recoil-free AK-47 for drones to advance unmanned warfare
Chinese researchers have successfully developed an automatic rifle with near-zero recoil, making it compatible for use on a ...
Escaping light pollution: Stargazing is amazing in these places with dark skies
More than 99% of Americans live under skies polluted by light. But dark skies at the Grand Canyon and more than 145 other ...